Moxa EDS-405A-MM-ST 5-Port Multi-mode ST Industrial Grade Fiber Switch

The Moxa EDS-405A-MM-ST is a robust 5-port industrial Ethernet switch designed for demanding environments, featuring multi-mode fiber optic connectivity with ST connectors. This industrial-grade device ensures reliable data transmission in harsh conditions, crucial for automation and control systems. Key advantages include its wide operating temperature range, DIN-rail mountable design, and support for essential industrial Ethernet protocols. The EDS-405A-MM-ST boasts a compact form factor, making it suitable for space-constrained installations within control cabinets. Its inherent reliability and rugged construction minimize downtime, directly impacting operational efficiency and safety in critical infrastructure. The switch's design prioritizes ease of integration and long-term performance, making it a cornerstone for resilient industrial networks.

Product Specifications

| Feature               | Specification                                       |

| :-------------------- | :-------------------------------------------------- |

| Product Type          | 5-Port Unmanaged Industrial Ethernet Switch        |

| Fiber Ports           | 2 x Multi-mode, ST Connector                        |

| Copper Ports          | 3 x 10/100BaseT(X) Auto-MDI/MDI-X                     |

| Power Input           | 12/24/48 VDC (9.6 to 60 VDC)                        |

| Operating Temperature | -40 to 75 °C                                        |

| Mounting              | DIN-rail, Wall-mount (with optional bracket)      |

| Protocol Support      | IEEE 802.3, IEEE 802.3u, IEEE 802.3x, IEEE 802.11    |

| Dimensions            | 31.5 x 135 x 105 mm                                 |

| Warranty              | 5 years                                             |

Core Features & Market Positioning

The Moxa EDS-405A-MM-ST distinguishes itself in the industrial networking market through its dual multi-mode fiber ports, offering extended network reach and immunity to electromagnetic interference (EMI) compared to copper-only solutions. This makes it an ideal choice for connecting devices across larger factory floors or between buildings where signal integrity is paramount. Its industrial-grade design, including a wide operating temperature range of -40 to 75°C and robust housing, ensures dependable operation in extreme environmental conditions. The switch's unmanaged nature simplifies deployment, requiring no complex configuration, which is a significant advantage for time-sensitive installations or environments with limited IT expertise. Furthermore, Moxa's reputation for reliability and extensive warranty further solidifies its position as a preferred solution for critical industrial applications demanding high uptime and long-term value.

Key Application Scenarios

The versatility of the Moxa EDS-405A-MM-ST makes it highly suitable for a broad spectrum of industrial applications. In manufacturing automation, it effectively connects PLCs, HMIs, and sensors on the plant floor, extending network connectivity between different machine cells or across large production areas using its fiber ports. Within the energy sector, it plays a crucial role in Supervisory Control and Data Acquisition (SCADA) systems for substations, oil and gas facilities, and renewable energy installations, where reliable communication over potentially long distances and in harsh environments is essential. Transportation systems, such as intelligent transport systems (ITS) and railway signaling, benefit from the switch's resilience to vibration, temperature fluctuations, and electrical noise, facilitating communication for traffic management and monitoring. Its dual fiber uplinks also provide redundancy options when paired with other network devices, enhancing network resilience in critical infrastructure.

Practical System Integration Guidance

Integrating the Moxa EDS-405A-MM-ST into an industrial network is straightforward due to its plug-and-play, unmanaged nature. For installation, ensure the switch is securely mounted on a DIN-rail using the provided clips or via a wall-mount bracket (sold separately). Power can be supplied via a 12/24/48 VDC power source, with dual inputs available for redundancy if a compatible power supply is used; connect the positive and negative terminals to the appropriate power input screw terminals. For network connections, use standard Ethernet patch cords (e.g., Cat 5e or Cat 6) for the 10/100BaseT(X) copper ports, ensuring correct pinout for straight-through or crossover connections (auto-MDI/MDI-X handles this automatically). For the multi-mode ST fiber ports, ensure compatibility with the connected devices and use appropriate multi-mode fiber optic patch cables. LED indicators on the front panel provide real-time status for power, network link, and activity, simplifying troubleshooting during commissioning.

Operation and Risk Mitigation

Operating the Moxa EDS-405A-MM-ST involves basic monitoring of its status LEDs. Green LEDs typically indicate power, a solid amber LED signifies a valid network link on a copper port, and a blinking amber LED indicates network activity. For fiber ports, similar link and activity indicators are present. Risk mitigation is inherent in the product's industrial design; its wide operating temperature range significantly reduces the risk of failure due to thermal extremes. The robust metal casing protects against physical damage and electromagnetic interference, common in industrial settings. To prevent network-related risks, ensure proper cable management to avoid strain on connectors and ports. When powering the unit, ensure the voltage source is within the specified 9.6 to 60 VDC range to prevent damage. For fiber connections, regularly inspect connectors for dirt or damage, as contamination can lead to signal loss. No user-serviceable parts are inside; therefore, any hardware issues require contacting Moxa support.

Scalability & Long-Term Value

The Moxa EDS-405A-MM-ST offers significant scalability and long-term value primarily through its robust construction and compatibility with standard industrial networking practices. While it is an unmanaged switch, its ability to serve as a reliable node in a larger network architecture allows for straightforward expansion by adding more switches or devices upstream and downstream. The dual fiber ports can be utilized to create redundant network paths or to extend the network backbone significantly, accommodating future growth in data demands. Its compatibility with various industrial protocols ensures it can seamlessly integrate with existing and future automation systems, including those migrating towards IIoT and Industry 4.0 initiatives. The 5-year warranty provided by Moxa underscores the product's durability and the company's commitment to long-term support, reducing the total cost of ownership and ensuring a stable network infrastructure for years to come.

FAQs

What is the maximum distance for the multi-mode fiber ports on the Moxa EDS-405A-MM-ST?

The multi-mode fiber ports on the Moxa EDS-405A-MM-ST typically support distances up to 2 kilometers. This range is sufficient for many industrial applications, such as connecting different sections of a factory floor or linking buildings within a campus.

This distance is standard for multi-mode fiber and offers a significant advantage over copper Ethernet for bridging larger gaps or areas with high electrical noise. It ensures reliable data transmission without the need for signal repeaters over these moderate distances.

Consider the specific fiber type (e.g., 62.5/125 µm or 50/125 µm) and the quality of the patch cables used, as these factors can influence the achievable distance and signal integrity. Always refer to the official Moxa specifications for precise details.

Can the Moxa EDS-405A-MM-ST be used in outdoor hazardous locations?

The Moxa EDS-405A-MM-ST is designed for industrial environments and offers a wide operating temperature range, but it is not inherently rated for direct outdoor hazardous location use without an appropriate enclosure. Outdoor applications often require NEMA or IP ratings for dust and water ingress protection, as well as specific hazardous location certifications (e.g., ATEX, Class I Division 2).

While the switch can withstand extreme temperatures, exposure to moisture, dust, and corrosive elements commonly found outdoors can degrade its performance and lifespan. Therefore, it must be housed within a certified industrial enclosure that provides the necessary environmental protection.

Always consult the product's datasheet and local regulations to ensure compliance. For applications requiring direct outdoor or hazardous area deployment, Moxa offers specialized industrial communication devices with appropriate certifications and enhanced environmental sealing.

How do I connect multiple Moxa EDS-405A-MM-ST switches together for network expansion?

To expand your network, you can connect multiple Moxa EDS-405A-MM-ST switches using either their copper Ethernet ports or the multi-mode fiber optic ports. For a simple daisy-chain topology, connect a copper port on one switch to a copper port on the next.

Alternatively, for longer distances or to avoid electrical interference, connect the fiber ports of one switch to the fiber ports of another. This is particularly useful for extending the network backbone between different areas or buildings. Ensure you use compatible multi-mode fiber optic patch cables with ST connectors.

For increased network resilience, consider creating a ring topology by connecting the last switch back to the first, provided your network management strategy supports such configurations and you have appropriate network protocols in place. However, as this is an unmanaged switch, advanced redundancy protocols like Spanning Tree Protocol (STP) are not directly supported on the switch itself.